PLANETOBSERVER / SCIENCE PHOTO LIBRARY PLANETOBSERVER / SCIENCE PHOTO LIBRARY
The Americas. Satellite image of the Earth seen at 00:00 (midnight) GMT (UTC), centred on the Caribbean. Oceans are blue and land is green and brown. City lights (yellow) in dark areas show areas of dense population, particularly in North America (upper left). The centre of South America (lower right) is sparsely populated and so has fewer lights. Image obtained using data from Landsat 5 and Landsat 7 satellites.
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